diff --git a/.dart_tool/package_config.json b/.dart_tool/package_config.json
index 444b8e112a2..284ed913ae5 100644
--- a/.dart_tool/package_config.json
+++ b/.dart_tool/package_config.json
@@ -11,7 +11,7 @@
     "constraint, update this by running tools/generate_package_config.dart."
   ],
   "configVersion": 2,
-  "generated": "2021-12-09T13:52:42.287379",
+  "generated": "2021-12-10T17:31:54.553345",
   "generator": "tools/generate_package_config.dart",
   "packages": [
     {
@@ -381,7 +381,7 @@
       "name": "js",
       "rootUri": "../pkg/js",
       "packageUri": "lib/",
-      "languageVersion": "2.12"
+      "languageVersion": "2.16"
     },
     {
       "name": "js_ast",
diff --git a/pkg/js/pubspec.yaml b/pkg/js/pubspec.yaml
index 44b80a94a4c..40fde9c8107 100644
--- a/pkg/js/pubspec.yaml
+++ b/pkg/js/pubspec.yaml
@@ -1,10 +1,10 @@
 name: js
-version: 0.6.3
+version: 0.6.4
 description: Annotations to create static Dart interfaces for JavaScript APIs.
 homepage: https://github.com/dart-lang/sdk/tree/master/pkg/js
 
 environment:
-  sdk: ">=2.12.0-0 <3.0.0"
+  sdk: ">=2.16.0-100.0.dev <3.0.0"
 
 dev_dependencies:
   pedantic: ^1.9.0